2015 Toyota RAV4 - Stinky tailpipe

Why would my car emit an exhaust smell upon decelerating? It happens when I get off on an exit.,

Does it smell like rotten eggs? If so then it could be a poorly designed catalytic convertor.

I’m trying figure out how you could smell the exhaust of a car you’re driving?

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That is a bit of a mystery to me, also.
:thinking: