Crop Circle visitors are unwittingly exposed to relatively large amounts of toxins, most likely CO (carbon monoxide), also many other extremely dangerous poisons and hallucinogens.
nang hindi kinukusa nakalantad ang mga bisita ng bilog ng crop sa medyo malalaking halaga ng mga toxins, Malamang CO (karbon monoksid), din maraming iba pang lubhang mapanganib lason at hallucinogens.