Winterization Air vs Chemicals...... Your 2 cents please

I do anti-freeze. We don't drink out of the system so after draining and flushing some fresh water through, most of the smell is gone. Then I run some bleach through the system for sanitizing. That takes care of all the antifreeze smell. The air way will work if you get all the water out. Just a small amount of water in a faucet can cause it to crack. Running antifreeze through it will displace the water. Basically air can work, antifreeze will work.