If a dying person's intentions regarding his or her own death remain unknown and then someone else takes action to end the person’s life in order to end the person’s suffering, and the person dies, this is an example of

Nonvoluntary euthunasia

Explanation: in non voluntary euthunasia, a third party that is another person decides the fate of the person. It involves a person other than the one on the sick bed gives a go ahead to taking the person's life. A case of a man who had an accident and was in a comma for a long time. The doctor believes that his chances of ever coming back is very slim. The wife of the man can choose to end the life of the man by taking him from the life support so as to enable the suffering of her husband. It is quite different from involuntary euthanasia. In non voluntary euthunasia, a patient is usually incapacitated or cannot make decisions and another party which is a third person makes the decision on behalf of the person. The person making the decision believea that the decision taken is what the patient wants.

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.