Bronchospasms are a possible side effect of some drugs: pilocarpine (which is used to treat illness resulting from the ingestion of deadly nightshade, as well as other things), beta blockers (used to treat hypertension), a paradoxical result of using LABA drugs (to treat COPD) and other drugs.
'Affix' is to secure to something, to attach. You 'affix' the stamp to the envelope. Affix is also a word element, such as a prefix or a suffix that is attached to a base/root word. What Does Affix Mean.
A prefix is one kind of affix. An affix is an element that, although not a word itself, can be bound to a word, or to the base or stem of a word, to form a derivative with a related meaning. Entire families of related words can be derived from an existing word in this way.