The Proton is fueled with Nitrogen Tetroxide and a variant of Hydrazine (UDMH). Both are incredible toxic and hazardous to humans, causing death with disturbingly small doses. UDMH is also a potent carcinogen.
Hopefully these folks were on the road and miles away before those fumes drifted their way.
Hopefully these folks were on the road and miles away before those fumes drifted their way.