don't ever smell your car's exhaust.
Chlorine is the element that smells like bleach. When in contact with water, chlorine forms hypochlorous acid, which is a common component of bleach and is responsible for its distinctive smell.
Bleach smells of chlorine because if you add an acid to bleach, you will produce chlorine gas.
The reason why cat pee smells like bleach could be due to the presence of ammonia in the urine, which can give off a similar scent to bleach when it breaks down.
If your semen smells nice, your sick. Semen smells like a sort of bleach.
because of the exhaust
It doesn't, or at least I don't think it does.
The car exhaust smells like the rotten eggs as a result of the hydrogen sulphide. This usually happens, when the engine is not serviced for a long time.
probably an exhaust leak, at or near the exhaust manifold
Likely an exhaust leak
Leak in exhaust system?
Sounds like you have a coolant leak.
Head gasket