Well - the trick is you need to have a proper ratio of nitrate (pink salt) to ensure that botulism can't form. Pink salt isn't the same as a brine. I highly recommend you get this book, and a scale as the measurements need to be fairly precise.
https://www.amazon.com/Charcuterie-Salting-Smoking-Revised-Updated-ebook/dp/B00CF2MBB2
But honestly cold smoking is much more dangerous than people realize unless you are cold smoking cheese/nuts. Doing meats requires them to be cured properly or bad things could happen.
Stay safe!
Charcuterie: The Craft of Salting, Smoking, and Curing by Michael Ruhlman is a good starter book.
The Art of Making Fermented Sausages by Adam and Stanley Marianski has more of the science behind it.
Charcuterie has a high risk for food borne illness if done improperly so best to read up first.