Not OP, but I still wear a mask on planes, wash my hands more often and more thoroughly, avoid touching my eyes, use more air filters, and don't share foods with my kids.
Same! Prior to the pandemic I almost always got sick post flight. I now wear a mask and take better precautions and all that and haven't been sick after being a lot more cautious about it. Frankly, worth it for me as I'd often end up miserable for weeks after a trip. Minor inconvenience of wearing a mask and being more aware of what I'm doing results in far less pain later.
Yeah, I'm not paying for a week in the South Pacific to spend the whole time recovering from a cold.