I mixed two cleaners and the air smells strange. What do I do?

Leave the room now, and take any children and pets with you. Get to fresh air. If anyone collapses, has a seizure, has trouble breathing or cannot be woken, call 911 immediately. Otherwise call Poison Control at 1-800-222-1222; the call is free, confidential and answered 24 hours a day, and a specialist will tell you whether anyone needs care and when it is safe to go back in. Do not try to neutralize the mixture by adding anything to it. Open windows from outside the room if you can do it without breathing the fumes. The steps below give more detail on each of these, then cover symptoms, cleanup, and children and pets.

Right now, in this order

1. Get out. Poison Control's first step for anything inhaled: "move to fresh air immediately" and "Stay away from all toxic fumes and gases" [1]. Do not stay to finish cleaning or to pour the mixture away.
2. Take everyone with you, including children and pets in nearby rooms, and close the door behind you if the room has one.
3. Call 911 if anyone "collapses, has a seizure, has trouble breathing, or can't be awakened" [1].
4. Otherwise call Poison Control at 1-800-222-1222, or use the webPOISONCONTROL online tool. Expert help is "free, confidential, and available 24 hours a day, 7 days a week" [2]. Poison Control's own wording is that you call this number "to reach a poison center" [2].
5. Air the room without going back into the fumes. Poison Control says to "Thoroughly ventilate the involved area" [1]. Open an outside window from outdoors, or open the door to another room that leads outdoors, only if you can do it without breathing the air. If you cannot, leave it closed and ask Poison Control or the fire department.
6. Rinse any skin or eyes that the mixture splashed, using lots of room-temperature water; the first aid page gives the times.

Tell Poison Control these things

Have what you can reach safely; do not go back into the room for it.

• What was mixed, by product name if you know it. If the bottles are outside the room, have them in hand.
• Who was exposed, with their ages.
• How long they were in the room and what symptoms they have.

Poison Control's online tool gives recommendations "based on age, substance, amount and symptoms" [2], so those are the facts that matter.

Do not try to neutralize it

Pouring baking soda, vinegar, ammonia or another cleaner into the mixture to "cancel it out" is mixing again, with a third chemical. CDC's rule is never to mix bleach or any disinfectant with any other cleaner [3], and nothing in Poison Control's first aid tells you to treat the mixture itself [1]. Leave it where it is until the room has aired and you have advice.

Symptoms and what each one means

For chlorine gas, the gas from bleach and acid, Poison Control adds: "If possible, shower for 20 minutes and breathe in the steamy air from the shower to help soothe your airway," and seek medical attention for trouble breathing or other serious symptoms [4]. In Poison Control's case of a woman who mixed an acid toilet bowl cleaner with a bleach cleaner, her symptoms resolved after she left the room [4]. Not every case ends that way, which is why the call matters.

NC Cooperative Extension notes that the gases from mixed cleaners are often clear and add little smell beyond the cleaners themselves [6]. If the air "smells strange" you have already noticed something; if several people in the house feel ill at once, treat it as an exposure even without a smell.

Children and pets in the room

Get children out first, before you call. Tell Poison Control their ages and weights if you know them. If a child touched or swallowed the mixture, follow the first aid page while you are on the phone.

For a pet, move it to fresh air and call your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 [8]. Keep pets out of the room until it has aired fully and the mixture has been dealt with.

Cleaning up afterward

No agency source reviewed for this page gives a step-by-step cleanup for a mixed-cleaner spill, so the advice here is cautious and short.

1. Ask first. When you call Poison Control, ask when it is safe to go back in and how to handle what is left.
2. Let the room air out fully with windows open before anyone goes back in. If your eyes or throat sting when you open the door, close it and wait longer.
3. Wear gloves and eye protection when you go back in.
4. Do not add anything to the mixture, and handle what is left the way Poison Control or your local household hazardous waste program tells you. The disposal page covers how state and local programs handle unwanted cleaners.
5. Rinse the surface, bucket and tools with plain water, then let them dry.
6. Put each product back in its own place, with acids, bleach and ammonia on separate shelves.

Making sure it does not happen again

Most mixing happens because one product held something its user did not know about. The never-mix table lists the dangerous pairs and the products each half hides in; tape a copy inside your cleaning cabinet.

References

1. Poison Control (National Capital Poison Center), *First Aid for Poisonings*, undated, read October 2026. https://www.poison.org/first-aid-for-poisonings
2. Poison Control (National Capital Poison Center), *Need Immediate Assistance?*, undated, read October 2026. https://www.poison.org/need-immediate-assistance
3. Centers for Disease Control and Prevention, *Cleaning and Disinfecting with Bleach*, last reviewed April 24, 2024. https://www.cdc.gov/hygiene/about/cleaning-and-disinfecting-with-bleach.html
4. Poison Control (National Capital Poison Center), Williams A. and Klein-Schwartz W., *Chlorine Gas*, undated, read October 2026. https://www.poison.org/articles/chlorine-gas
5. New Jersey Department of Health, *Hazard Alert: Mixing Bleach with Other Cleaning Products Can Be Deadly*, undated, read October 2026. https://www.nj.gov/health/workplacehealthandsafety/occupational-health-surveillance/Hazard_Alert-Mixing-Cleaners.pdf
6. NC State Extension, Yancey County Center, Maness N., *Health Risks of Mixing Household Cleaners*, November 1, 2024. https://yancey.ces.ncsu.edu/2024/11/dontmix/
7. New Jersey Department of Health, *Right to Know Hazardous Substance Fact Sheet: Peroxyacetic Acid*, RTK Substance No. 1482, revised October 2004. https://www.nj.gov/health/eoh/rtkweb/documents/fs/1482.pdf
8. ASPCApro, *Are Essential Oils Dangerous to Pets?*, published February 6, 2018, modified February 15, 2024 (ASPCA Animal Poison Control Center number). https://www.aspcapro.org/resource/are-essential-oils-dangerous-pets