That sounds like the plot for Stargate SG-1 season 6 episode 13 -- Sight Unseen
Exposure to an ancient device makes people see huge, luridly colored bugs, and the symptoms are spread by physical contact. Turns out that the bugs didn't stow away in the device like was originally thought and weren't really affecting anything except freaking out people and causing car crashes. They were from Earth the whole time but no one ever noticed hem before because they were invisible and phase shifted.
The 'cure' also came from the device and was also spread through physical contact. Scary, luridly colored huge bugs went back to being invisible and not effecting anything, and everything went back to normal. But not before some adventures amongst the populace of Colorado Springs, of course.
no subject
Exposure to an ancient device makes people see huge, luridly colored bugs, and the symptoms are spread by physical contact. Turns out that the bugs didn't stow away in the device like was originally thought and weren't really affecting anything except freaking out people and causing car crashes. They were from Earth the whole time but no one ever noticed hem before because they were invisible and phase shifted.
The 'cure' also came from the device and was also spread through physical contact. Scary, luridly colored huge bugs went back to being invisible and not effecting anything, and everything went back to normal. But not before some adventures amongst the populace of Colorado Springs, of course.
*enables like an enabler*