How about hearing, smelling, and feeling something very large passing near you and not seeing a thing? Big enough to hear it through the brush and breathing, then feeling it shake the ground when it passed near. Saw branches move, and grass flatten but nothing from my eyes. It smelled very repulsive, like what I squirted in my underwear right after it was out of the area. It's movement stayed constant, if it was aware of me it did not seem to matter it was moving briskly and must have weighed hundreds of pounds. Kept expecting to see UFO activity after that for some reason.