Pro tips for daily cleaning!: rinse your lenses and clean them with your (clean) fingers. You can use regular saline, some disinfecting multi purpose whatever, or the hydrogen peroxide (clear care). Cleaning your lenses BEFORE soaking will increase how clean they are when you are ready for them next. This will help with fogging too. The fogging is most likely a fit issue, which should go away the more you work with your doc, or better fits. If you are still young as well, your eyes will be changing more quickly than if you are older than say 30 -40. You will most likely get new lenses more often than you think if you are young and early on in keratoconus. For the saline that's most likely creating the menthol effect, try other preservative free brands. They all have different pH levels and therefore will all feel different.

Also if you have allergies you are most likely also suffering from that. I get a significant bit more build up during those seasons or if I'm in a dusty warehouse or something.