No, due to the fact that the "Bio" in bio-terrorism means biological, also meaning living organisms and as far as i know, there are no living organisms in tear gas or pepper spray or anything of the sort.
According to one expert the most common causes of minor knee pain are: strains, ligament tear, cartilage tear or osteoarthritis. If you have persistent knee pain you should get it properly diagnosed.
Wear and tear on a bone due to repetitive minor trauma (compression or traction)
Pegmatities
An Achilles tear, or more commonly know as a rupture, is when the tendon connecting your calf to your heel tears or ruptures. This can be a full tear which may require surgery, or a minor tear that can be treated nonsurgical. Go here for more info on treatment http://www.emedicinehealth.com/achilles_tendon_rupture/page5_em.htm
Lacrim- is the medical terminology combining form meaning tear. For instance, tear ducts are lacrimal ducts.
Tear ducts do not form tears. Tears form from lacrimal glands. They are located above and to the right of the right eye and above and to the left of the left eye.
could be ovoid
Brett Favre has a tear in his biceps tendon. When that was repaired before signing with the Minnesota Vikings they also found out he also has a minor tear in his rotator cuff in his shoulder.
a tear fault
If you tear the anus, you could have bleeding, itching, and burning pain. You also risk serious infections.
tear up a kleenex
Ethers containing peroxides can be detonate as tear gas when heated. Unburned material may form powerful tear gas. When wet, also forms irritating formaldehyde gas.