I have been lucky so far. I need to remember to bring the Off when I go now. I had a can in my bag a few weeks ago and it must have sprayed. It was all over my camera and turned the black to white. I thought it had damaged it. My food was ruined also.
If the OFF your using has DEET, it will melt plastic and other stuff. Can ruin a camera if it's on your hands. Picaridin is safe.
'DEET will damage plastic materials, so do not apply DEET formulations on or near plastics, acetate, rayon, Spandex, synthetic fabrics (other than nylon), furniture finishes, leather, watch crystals, and painted or varnished surfaces. Plastic glass frames and goggles should be protected from DEET applications. Car finishes and interiors also may be damaged by DEET. It will not damage nylon, cotton, or wool fabrics.'