The phrase "noxious stimuli" refers to things that are harmful or irritating to our senses or body. It can include things like strong odors, intense pain, or harsh chemicals that can cause discomfort or damage to our body. Full definition
You can only distract them by applying some extremely noxious stimulus such as holding a flame to them. (religion-online.org)
These make normal medical examinations impossible, forcing responders to rely on «noxious stimulus triage» — nicknamed kick triage — to sort out the living from the dead. (discovermagazine.com)
This defensive withdrawal reflex can be facilitated (sensitized) if the animal is previously given 4 days of training, consisting of four brief noxious stimuli each day. (science.sciencemag.org)