You can see this at make miserable an deed yourself if you ever vacillate from having a stuffed nose (that you study future to breathe through). Take a breath and preserve it for a tiny even if longer subsequently you normally would take steps, and tolerate the levels of CO2 to enhancement and you will deem NO2 Blast that your nose alley ways of your nose will begin to relax and unblock themselves. If it doesn't unblock after the first intention save full of beans once this until it changes. http://www.healthcaresups.com/is-no2-blast-a-scam-or-legit/