# Toxic Odor **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** hyundai, sonata\ **Created:** [April 6, 2011, 2:34pm UTC](https://community.cartalk.com/t/toxic-odor/63423 "2011-04-06T14:34:08Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Dalton2011](https://avatars.discourse-cdn.com/v4/letter/d/71c47a/32.png) [@Dalton2011](https://community.cartalk.com/u/Dalton2011)\ **Post date:** [April 6, 2011, 2:34pm UTC](https://community.cartalk.com/t/toxic-odor/63423/1 "2011-04-06T14:34:08Z")
Lately I have noticed an intermittent strong overheating odor coming from the rear passenger tire area of my 1999 Sonata. I was also beginning to notice the car vibrating or riding unevenly. I took it in to Les Schwab to have the brakes checked and was told they were fine with over 50% on all four brakes. I did have the front tires replaced as they were worn and wearing unevenly and was told this is what was more than likely causing the vibrating. That was a couple of weeks ago and I had not noticed any odor coming from the wheel well until yesterday the minute I opened my car door after driving home from work there was the same strong toxic smelling odor coming from the same rear passenger wheel well, but not from anywhere else. I have only noticed this smell after driving home from work and there is a fairly steep hill I go down not too far from my home. Is this a brake issue or something else? I ---
**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\ **Post date:** [April 6, 2011, 3:18pm UTC](https://community.cartalk.com/t/toxic-odor/63423/2 "2011-04-06T15:18:18Z")
The next time it happens, carefully check if that wheel is hotter than the others. If so, you probably have a sticking brake caliper or possibly have a brake line that’s collapsing internally. ---
**Author:** ![AL5000](https://avatars.discourse-cdn.com/v4/letter/a/a8b319/32.png) [@AL5000](https://community.cartalk.com/u/AL5000)\ **Post date:** [April 6, 2011, 4:06pm UTC](https://community.cartalk.com/t/toxic-odor/63423/3 "2011-04-06T16:06:28Z")
Toxic, as in an odorless poisonous gas? ---
**Author:** ![Ron-man](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ron-man/32/739_2.png) [@Ron-man](https://community.cartalk.com/u/Ron-man)\ **Post date:** [April 6, 2011, 4:39pm UTC](https://community.cartalk.com/t/toxic-odor/63423/4 "2011-04-06T16:39:22Z")
Not all toxic gasses are odorless. Many have a distinct smell. The word “toxic” just means it contains a toxin, or has a poisonous effect. ---
**Author:** ![Dalton2011](https://avatars.discourse-cdn.com/v4/letter/d/71c47a/32.png) [@Dalton2011](https://community.cartalk.com/u/Dalton2011)\ **Post date:** [April 7, 2011, 1:43am UTC](https://community.cartalk.com/t/toxic-odor/63423/5 "2011-04-07T01:43:37Z")
I did check the one wheel before I had the brakes checked and the wheel was very hot, I will remember to check all of them next time, thank’s. ---
**Author:** ![AL5000](https://avatars.discourse-cdn.com/v4/letter/a/a8b319/32.png) [@AL5000](https://community.cartalk.com/u/AL5000)\ **Post date:** [April 7, 2011, 12:25pm UTC](https://community.cartalk.com/t/toxic-odor/63423/6 "2011-04-07T12:25:49Z")
Yes, I understand, i was being facetious. There’s no such thing as a toxic odor.