If that's what turns you on, you go for it mate.
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Recent research has identified that leaving a roof top tent on a car increases fuel consumption by 20%, leaving it open makes that 35%.[biggrin]
While the stated intended use is perhaps a little beyond the manufacturer intended I thought breathing was what hazmats were supposed to maintain
Not have a dig at people with medical issues- Please excuse me if you find this humor to dark or offensive.
https://www.youtube.com/watch?v=FzoXQKumgCw&t=33s