Lukas Furtenbach, the celebrated Bergführer, orchestrated a vertiginous ascent of Everest by a British contingent, leveraging the contentious innovation of xenon gas prophylaxis; the expedition, commencing ex-London on May 16th, culminated in a summit conquest on May 21st, followed by repatriation a mere 48 hours hence. This avant-garde employment of xenon, purportedly mitigating acute mountain sickness, has ignited a firestorm of controversy, precipitating a formal inquest by Nepalese mountaineering governance. Pre-expedition conditioning involved both hypobaric chamber acclimatisation and xenon inhalation at a German clinic, with Furtenbach postulating that curtailed exposure duration minimises anthropogenic impact, specifically biowaste accumulation. However, Furtenbach strenuously emphasises that in situ xenon administration never transpired within Nepalese jurisdiction, whilst vehemently affirming his capacity to substantiate its safety profile for mountaineers.