aired / erred are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
aired: (verb) be broadcast. (verb) broadcast over the airwaves, as in radio or television. (verb) expose to warm or heated air, so as to dry. (adjective) open to or abounding in fresh air.
erred: (verb) to make a mistake or be incorrect.
aired: EH·r·d
erred: EH·r·d
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)