https://www.youtube.com/watch?v=yxWRxtS_cGI
http://store.naturalnews.com/NanoNutra-Liposomal-Vitamin-C-1...
http://store.naturalnews.com/Optimal-Liposomal-Vitamin-C--5-...
It's the cooking that's the issue because the nitrates convert to nitrosomenes under high heat.
If nitrates were the issue, then we should stop eating celery because that's where the nitrates in processed meats come from, celery juice.
It's fairly easy to avoid pink-salt. Hebrew National hot dogs don't have it. "Uncured" bacon doesn't have it.
Problem solved without much compromise (IMO all-beef, nitrate/nitrite free hot dogs taste much better Oscar Mayer or Ballpark anyways but I love my high(er) quality meat-in-tube-form). Does celery seed fall under this?
BTW, "traditionally" cured bacon tastes better than "uncured" IMO, but it's pretty much impossible to find IME outside of boutique butchers. The "uncured" stuff is pretty easy to find these days. A few years ago it was hit & miss but now even the Fiesta (a lower-income anglophied Supermercado) around the corner carries it. I guess there's just a lot of economic incentive to use the pink-salt shortcut.