I have a very strong & raw "menthol ice"
juice that I hate and that I use ONLY when I have a cold .To be honest,last time I was sick it was the only
juice i could even vaguely taste/feel!
AND it unblocked my nose too!It was totally clogged, couldnt breathe, couldnt taste any food at all
I knew I was cured and my cold was over when I tried to vape it and it blew me away-burned my throat it was so strong!
By the way putting a few drops (2 or 3 drops exactly-no more-and wash it down with water after a few minutes or as long as u can stand it) of peppermint essential oil under your tongue WILL clear your sinuses almost immediately and last for a few hours.
PS : My
eliquid was a common rather cheap French brand, almost generic, Im sure you can easily find an equivalent near you,just look up the strongest menthol flavored juice available!