Hello, so my friend SWIM has been an addict for more years then he can even remember. SWIM is a big sniffer of Heroin (East Coast USA) & occasional Cocaine. Recently SWIMs sinuses have been having a bad reaction to the drugs. Alot worse then the usual. SWIM typically carries a Vix/Saline Nasal Spray to help, but it's hardly helpful anymore. Shooting is not an option no matter what & with SWIMs tolerance smoking it is a total waste. Any sort of Harm Reduction or over the counter treatments that would be of any actual help? Would following it up with a shoot of warm water help or make it worse? Need feed back please before his nose collapses. Thanks