I really don't think it's that dangerous since it quickly evaporates fully away. I can see how some of it may not initially in the wick, but again that will still evaporate away upon use. And since you should be rinsing the gear under hot water after soaking in alcohol anyways, whatever is left is gonna be negligible IMO.
EDIT: I should have mentioned my recent system for rinsing gear that had lingering taste on the coil - an overnight soak in vinegar, followed by a hot water rinse and air-dry. I was able to get rid of a stubborn mocha flavoring on 1 and a burnt taste in another. I'm soaking another 1 right now that I'll be shocked to fully cleanse - w/ the cowboy
tobacco flavor that's been in there for 2 months.