Caulk to use?

I'm getting ready to goto the hardware store for sump supplies to make baffles and get the top to my new stand I made last night and more wood to make a canopy, but I have read on here not to use caulk that smells like vinegar or something like that? All I know is the caulk that I bought last time was the wrong stuff (smelled like vinegar) so what should I be looking for?



I'll also be getting a subway sandwich if anyone wants one..