Our sense of smell only smells each different smell for 7 seconds
Lime
Natural Gas don't have smell but smell is mixed up in it for the protection like the gases used in home or pipline,if they are leaked we can smell them
I have seen this where water has leaked into the ductwork and stagnated.
Maybe.
your vehicle may smell like antifreeze while driving because it is overheating
Because the truck is leaking silly if u smell gas why u driving its leaking
Could be overheated coolant or just leaked oil burning off your exhaust headers
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try baking soda with vinegar for a soak.
All particles in a gas contain kinetic energy, ie they are moving. As they randomly move about they bump into each other and so they gradually spread until they bounce off the side of the container. Think how if someone farts people closest to the offender smell it first and there is a delay before people further away can smell it. It is the same principle. The "fart molecules" start in a "container" with a small volume. When they are released into a larger container (ie a classroom) they begin to spread outwards until they fill the whole area.
If coolant leaks onto an engine it will cause no damage unless it leaks onto the alternator or into a wire harness connector of some sort. It is best to clean up leaked coolant as much as possible. It will smell a little when the motor is started. Leaked coolant on the ground is a danger to animals and children as it has a sweet smell but is very toxic.
Have your fuel filter checked first. If that doesn't solve your problem, then have your catalytic convertor checked.