When I worked on commercial fishing boats, the captains were MANIACAL about enforcing the no cigs in the wheelhouse rule because of their detrimental effect on millions of $$$ worth of electronic gear. I don't know how vulnerable ag equipment is to smoke (probably not very, as it is intended to be run in humid areas to begin with) but it's something to be aware of. I'd never smoke around my laptop- (not that I smoke cigs to start with, but hypothetically)too freakin' expensive to replace because something is all crapped up.