If i clean hydrasense nasal tip with alcohol, will that sterilize enough for my husband to use if need too?

Maybe OK, but...: ...alcohol isn't always reliable. If you had your husband are sharing (or recently had) a cold caused by the same virus, no harm would come. But either of you could be carrying different cold viruses, even when you have no symptoms. Why take the chance? HydraSense and other saline nasal sprays are cheap and you should each have your own (and keep them labeled with your initials).