Parosmis, from παρα, "male [Latin: ‘badly; wrongly’]," and ὄζω, "oleo, olfacio;" analogously with paracusis and paropsis, and hence preferred to parosmia. The common term among nosologists is anosmia, but this only includes one species of the genus, namely, privation or destitution of smell; which, in fact, is the only one that has hitherto been introduced into nosological systems.
Source: wiktionary