I'm writing a story where FTL travel has been achieved for a while, and some government warship comes across the equivalent of white trash in space cooking meth relatively near some outpost on the ridge of the galaxy. The reason the cooks aren't galaxies away from all civilization or something is because FTL takes time, is expensive, certain distances can only be traveled with certain ships, yadda yadda yadda.

In order to avoid all the fumes that happen with making meth, and most importantly since they are in space anyway, I thought it made sense that it be done in a vacuum environment, exposed to space perhaps. Is this possible? Do the chemical functions still work? I don't know anything about meth, but I thought it wise to first ask the question, to see if this would make sense at all. Or are the chemical reactions of meth typically made in a vacuum anyway and this is all redundant lol

I know I know, it's seemingly very soft sci fi anyway and I shouldn't care about something like this or whatever, but I do.