tried and it was fine. I don't have a cracker, I have one of these https://www.amazon.ca/Whipped-Cream-Dispenser-Liter-plastic/dp/B0008JGU9I type things so it expands a lot. and I don't open it all the way. It's not warm, but it's not cold either.
also, how much nitrous is safe to use? like can i go thru a box of 24 in a day? and do that like once a week?
If you're having problems making your own but want to stay zero carb, you could always invest in one of these: http://www.amazon.com/Mosa-Whipped-Cream-Dispenser-plastic/dp/B0008JGU9I (or similar).