It's not the tobacco. It's the additives, flavorings and pesticides. I'm leery of these pouches and their flavorings. Don't get me started on vape poison. I made my own pouches from the organic tobacco I prefer just to see if I liked it. I wasn't in to it, but it did kill the smoke craving for a bit. A pouch might prove useful in those last few hours of an 8-10 hour flight.
Patches and gum are the ticket!