The Police Track William Palmer's Movements

Ammonia pills have to be prepared for in advance because otherwise, you know, they evaporate. There's not a bottle of ammonia pills that you can pull out and give someone you have to prepare them. Ammonia is volatile. That's why you can inhale it. And so if it just sits there, then this volatile chemical eventually just evaporates. Now, putting a pill up someone's nose. Is it feasible that something else other than ammonia got into his system? I mean, could you just shove any kind of poison up a person's nose and it would go quickly into their system as quickly as going through your stomach?