It might be good to study up on bee sting avoidance techniques and bee behavior.
Certain colors, scents (perfumes, deodorants, lotions, etc.) are more likely to set them off. For example, there is a reason why beekeepers wear white as opposed to black.
Can bees sting through Gore-tex? I know moquitoes can't penetrate it--at least the ones I've encountered thus far.
As mentioned, discussing options with a medical specialist would be wise and prudent...