Final answer:
Saliva, urine, sweat, and tears are not considered sources of BBP, unless visibly contaminated with blood.
Step-by-step explanation:
Body fluids that are not considered sources of BBP, unless visibly contaminated with blood, include saliva, urine, sweat, and tears. However, it is important to note that saliva is always assumed to be contaminated with blood, so appropriate precautions should be taken.