My house is being funigated and I totally forgot to take my my vape and juice out of my drawer. Would it be a good idea to replace to cotton and redo the build? And also would it be a good idea to toss the juice?
Definitely replace the cotton. Re-doing the build might not be necessary (just give it a wash/dry fire if you can). If the juice bottles were closed/sealed it should be all good, but it kind of depends on where they were. If they were in an enclosed place (like a drawer) they likely weren't contaminated by the fumigation. If they were on a desk, or even with the caps off in a drawer, I'd say it's not worth the risk.
Last time I bug-bombed my house I was pretty specific about putting my vape stuff in a drawer. I'm not dead yet, so..