That's a worry you simply don't need. I doubt you would flag a positive, but who needs the worry? If your friend can afford drugs, your friend can afford a vape.
My two cents: if you aren't using, you should be ok; encourage the friend to get their own vape set up. Sent from my XT1565 using The Vapor Talk mobile app
Manufacturers are pumping out a lot of really nice products lately. These two came today. A Wotofo Serpent SMM and an AMMIT 25 single coil. They both have a bit of a restricted draw in comparison to say a Beast but the flavor is just top notch on both of them. Vapor is plenty adequate for me as well. Both have modest builds in them and are being vaped with TC. Nice juice capacity as well for short rta's. Nailed both builds first shot. That is definitely a first for me. I think they are just that forgiving regarding wicking.