Well, about 3 months or so of steady snuff use has given me, for the first time in my life, absolute and complete relief from nasal allergies and sinus infections, to which I have been a martyr, lo these many years. I know this isn’t exactly earth-shattering, as many, many others have reported similar relief, but I can’t help adding my (no longer snuffly and stuffed-up) voice to the chorus of those noting the effect. All hail the Sovrane Herb!
Mines been opposite… but I think it’s more due to the season change to humid and hot.
The only time I got stuffy on snuff was when I sniffed a menthol all day.
the years I’ve been doing snuff have been the only years I’ve not gotten a sinus infection. 
This is encouraging; I’ve suffered from allergies for years.
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I’m in the club as well. I’ve always had horrid allergies. Since taking up snuff I’ve stopped using the Flonase (Rx allergy nose spray) as I no longer need it. Added bonus, for the cost of the perscription I can buy well more than a months supply of snuff!
Me too. I used to have sinus problems, dry nose, stuffiness, etc. Not any more, unless I snuff too much toast. lol