chemicals and urea and ammonia
Ammonia factories produce the gas ammonia (NH3).
Ammonia factories make ammonia gas (NH3), which is used in some cleaning products in aqueous form. Ammonia-based cleaners are for household cleaning, not person hygiene.
They don't put anything in your cells.
The easiest way for you and I to get ammonia (well, not counting the obvious "go to the store and buy some!" answer) is to collect the ammonia gas emissions from fresh dung. Factories make it out of natural gas.
carbon dioxide and amine if you ate spicy things and ammonia if you ate eggs
They do not make any gas in your body, though you may inhale small amounts of ammonia if you live near one.
hyrdogen gas and nitrogren gas.
Usually people who live near factories which give of the gas into the air that makes acid rain.
Ammonia is compressed to form liquid ammonia. When the presssure is released it evaporates to produce a low temperature which turns liquid cream into ice cream.
Sorry, but no, they do not. However, there's a very simple solution to your problem: stop touring them.
In the book, "A Child Called It", David's mother locks him in a room with a bucket of ammonia. Ammonia is a colorless, suffocating gas.
Ammonia is a basic gas. It is not a neutral gas.