I was going to suggest this. Glad I scrolled long enough to find your comment. Fit to foot and stride is critical to getting shoes that can last.

Your not noticing something doesn't invalidate other people noticing them. Maybe their area has different hardness of water than yours does. Maybe they're a supertaster and you're not. Maybe they have pregnancy nose. If they can smell the dishwasher detergent on the microwaved plastic, they'd be able to know that plastic's been heated up with dishwasher detergent.

It seems pretty extreme to jump to saying they're imagining a phenomena you haven't noticed.

I found Mod Podge that is labeled dishwasher safe. I used it on my highly stickered vacuum-insulated water bottle. I'm not going to put it in the dishwasher, just hoping the stickers will last longer with handwashing with the dishwasher-safe seal.

Just throwing the idea out there that using dishwasher-safe Mod Podge might help folks with things that wouldn't otherwise get damaged in the dishwasher.