You can unscrew the head of a water extinguisher with ease, and they have a Schrader valve for re-pressurisation. There is absolutely no reason why you cannot fill one with whatever you like.
@samueldavidkeyes started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
You can unscrew the head of a water extinguisher with ease, and they have a Schrader valve for re-pressurisation. There is absolutely no reason why you cannot fill one with whatever you like.