Hey everyone--- this is a pretty subjective question. I don't really know much about diffusion rates for gases, etc, and am curious what, if anything you'd do.

I have an attached garage that I use as a workshop. Occasionally I use various volatile organic compounds (acetone, paints, isopropanol, etc)-- nastier stuff like brake cleaner I'm careful to use outside. I'm reasonably careful-- I have the side door of the garage open when using stuff, promptly clean spills, dispose trash outside quickly, but there is probably some degree of undetected spillage etc.

My house is well insulated and sealed, but even so there is also probably some degree of an air leak / path to my kids' room, and I would like to mitigate any risk of nastiness entering the house. At the same time I don't want to be wasteful with energy. I'm struggling with whether a tiny ventilation fan exhausting air 24/7 from the garage is likely to do any good-- the garage door is pretty big and leaky and probably I won't be able to develop very much negative pressure, etc. What do people think / what would you do?

Thanks!