Disease Vector

A common carrier
Of most uncommon disease
Measles mumps and whooping cough
Cancer and the ragweed sneeze
Flying in upon spidery spores
Supported by a breath of breeze
Darting into your open moist suckhole
Infiltrating weak defenses with ease

Anthropologists from the next great species
Will deduct that an asteroid was to blame again
Though this time it wasn't one that hit the ground
But just one that passes nearby now and then
Taunting us until we sent a robotic probe
Bringing back samples dropping on silver chutes
Which fluttered and flailed as they failed to extend
Spilling contents across the desert floor
Spelling humanity's end