I have the openrun shokz, nothing in ear and still sound decent Deal of the day: SHOKZ OpenRun Wireless Bone Conduction Headphones, [England Athletics Recommended] Open-Ear Bluetooth Earphones with Mic, Waterproof Sports Headset with 8H Playtime for Running Workout(Lunar Grey) https://amzn.eu/d/9zIMKAB

Use alcohol or anti static cleaning form and a cloth or soft toothbrush and cotton swabs. The sugar is what’s bad for it so make sure there’s nothing anywhere before starting and should be fine unless damage has already been done