"Can boiling atty in water kill the atty?"
Not necessarily.
How long did you boil them? You may not have boiled them long enough.
Have you examined the innards with a magnifying glass? Compare them under the glass with a brand-new atty. It's possible the attys are still gunked up. "Darker"
e-liquids are notorious for really gunking up attys.
Did you let them dry long enough? Usually it's best to let them dry and rest 24 hours or more before trying to use them, unless you've used a hair dryer or something like that to make all the water go away.
Finally, word to the wise with regard to attys: clean them
before they get hopelessly gunked up!
I clean most of my used attys once per week. Those have mostly been used to sample less than one ml. of new flavors, which is really easy on them. But I also have a Reo Grande. I vape it maybe a couple of hours per day, and usually I'm
vaping a
tobacco flavor (another notorious gunker-of-attys). Those attys get changed out every two to three days and go in the "attys to be cleaned" jar. They all look nearly squeaky-clean before I clean them, but I clean them anyway.