On kto czuł to, rozdał to?
"That gas smells strongly" Or is that too far from the Polish sentence?
My first guess was odor.
Well, technically "zapach" is neutral in meaning, but somehow it seems safe to assume that this smell here is unpleasant.
Przepraszam, nie powinienem był jeść tych dwóch burrito z fasolą.
Could "mocny" work here instead of "silny"?
Yes, I guess so. Added.
People can smell when you Taco Bell
What about aroma.
"aroma" is a nice food or coffee smell. I don't think it really applies to a strong gas smell.