I’m easily thankful I ended up taking that flight plus laying next to the woman who taught myself and others all about indoor air conditions. Normally, I hate flying plus I hate flying for suppliers the most. There is nothing beautiful about being stuffed inside a metal tube that doesn’t have the sort of air conditioner I need. I don’t want to get into the whole being off the planet section of my aircraft issues. But flying again after not having to get on aircraft for so long due to the pandemic was not something I was at all looking forward to. So I was a bit glum when I got on the flight to see that it was packed. And of course, there wasn’t enough air conditioner plus wearing a mask made myself and others even more warm. However, sometimes things happen for a reason. I was meant to be on that flight in order to learn about how to improve my indoor air conditions at home. The woman who was next to myself and others must have sensed my discomfort about being on a plane plus wearing a mask. She simply assured myself and others that this was a relaxing precaution. And she had diagnosed to be sure that these planes had HEPA filters. I was not aware of the HEPA filter although I’d heard the name. She then explained that another HEPA filter is capable of removing more than 99 percent of all airborne contaminants. The HEPA filter was even helpful in mitigating viruses as well. I was so impressed that I decided to substitute the air filter in my lake home when I got back from my trip. After installing a HEPA filter, the indoor air of my lake home was remarkably improved.