exposure – n. the fact or condition of being affected by something or experiencing something

respiratory – adj. of or relating to breathing or the organs of the body that are used in breathing

inhale(d) – v. to breathe in

evacuation(s) – n. the act of forcing someone to leave a dangerous place

hazardous – adj. involving risk or danger

pen(s) – n. a small enclosed area for animals

replicate – v. to repeat or copy something exactly

toxicology – n. the study of poisonous chemicals and drugs and how a person or other living thing reacts to them

congestion – n. the condition of having ones respiratory system blocked with fluid such as blood or mucus

cycle – n. a repeating series of events or actions