I had to take my husband to the hospital yesterday as the chemo was affecting his kidneys and heart in a bad way.. I am positive they will find an answer. Any way the important thing is I had already asked his chemo Dr. if good vap. He finally three weeks ago quit the stinkies with the green smokes. So today I took them into the hospital and and asked if it was ok for him to use them in his private room.. They said yes and that they have several patients that have them. Just don't walk the halls while vaping, which he would not do anyway.. So hurray for the vapers.. He is in Florida Hospital in Ormand Beach. very nice and brand new..