Q&A for How to Get Rid of Onion Smell

Run the clothes through the washing machine again, with a cup of vinegar this time.

Use car air fresheners. You can also leave the windows open while driving to help air out the car.

Try a cider vinegar rinse. Mix two tablespoons of cider vinegar with two cups of water. Apply the mixture to your hair and leave it in for a few minutes. Then just rinse it out of your hair. Both the onion and the vinegar smell should be gone.

Pour a nice soap in the drain and put on the disposal. It will eliminate the smell. You could also poor vinegar and baking soda into the drain, or grind a lemon through the disposal.