Oh man, I totally get this. My brain was so wired to that chemical smell telling me when a coat was ready. Now with these newer water-based things, it's just guesswork and poking at it with my fingernail (which feels wrong). I've ruined a couple pieces by not waiting long enough because there was no smell left to guide me. It's like losing a sense you didn't know you needed.
Seriously, that smell was like a built-in idiot checker. Now I'm just out here poking at my projects like a caveman trying to figure out if the rock is dry. Progress feels like going backwards sometimes.