Originally formed in 2012 at St Andrews College in Blackrock, Dublin, the band decided on the name Inhaler in 2015.

On their 2019–2020 tours, the band released a self-titled debut EP featuring the singles "It Won't Always Be Like This", "Oklahoma" (Late Night Version), "My Honest Face" and "There's No Other Place".

[12] The band were one of the winners of the Music Moves Europe Talent Award 2021[13] and were also shortlisted for the MTV Push UK & Ireland 2021.

[19] On 10 June 2023, the band performed at Slane Castle as the opening act for Harry Styles' Love on Tour show.

After debuting it live during their autumn 2024 tour of America, the band released the song "Your House" on 29 October 2024.

[21] Hewson named 80s and 90s bands such as the Stone Roses, New Order, Joy Division, Happy Mondays,[22] Depeche Mode,[23] Echo & the Bunnymen, Talking Heads, and Oasis[24] as Inhaler's formative writing influences.

Jenkinson in particular was inspired by Kele Okereke of Bloc Party to pursue alternative and rock music.