I have chronic severe sinusitis with enduring psuedomonas infection and have tried every conceivable antimicrobial up my nose to no avail.
Anosmic for 20 years and just recently are there others who understand what it is to lose 1.5 of your 5 senses.
Trust me I use it 50/50 in my water pic.
My dentist said whatever your dong at home keep it up.