looks as though wully has started the train rolling again chomp , r4dent though i don’t dispute you were robbed the cynical comments are because of items like the report below, to gain entry & administer something like chloroform i would agree is possible but to gas an entire train carriage/ caravan/ villa less so also an anaesthesist i know says not only would the cost of the gas be prohibitive but that even a trained doctor would not be able to administer enough anaesthetic in a large volume space without killing some of the inhabitants,
—The robbery of Jenson Button in the South of France while under the influence of an alleged externally administered sedative anaesthetic inhalation agent in gaseous form, gained a robust dismissal by the Royal College of Anaesthetists who ‘… reckoned such a scheme would be nearly impossible’. A spokesman said: ‘Our view is that it is very unlikely because it would be so impractical. You would need to use a truckload of gas, and that amount would be phenomenally expensive to obtain. One has to ask why anyone would spend so much money on what is such an impractical method’ 1 . The French police were also sceptical, although there has been previous alleged gassing in France, one of the footballer Patrick Viera, another the fashion presenter Trinny Woodall. Vapour monitors will detect gas in truck cabs and motor homes in the United Kingdom. 2 The Royal College can be challenged on counts of impracticality, volumes, and cost. Inhalation agents chloroform and trichloroethylene (trilene) are anaesthetics of the past, and chloroform has been used for criminal acts. 3 They are easily available, the former is a solvent, the latter an industrial de-greaser, and both can be purchased (with restricted sales) for a modest sum in the United Kingdom, and presumably in France. Trilene was available off-the-shelf in French supermarkets until 20 yr ago; removed after its abuse was noted. Avogadro's Hypothesis when applied to chloroform gives 22.4 litres of gas at standard temperature and pressure from its molecular weight in grams of 119.38 g. Taking into account liquid density of 1.49 and at 20°C, 80 ml of chloroform will give 24 litres of gas, representing 100%, in a closed chamber. The minimum alveolar concentration (MAC) required to eliminate movement after a surgical incision in 50% of patients anaesthetised with chloroform, is within the range of 0.5–0.7%. MAC of trilene is considerably less at 0.17%. A sedative effect may occur at half of this percentage, and for a closed room of 4×4×6 metres (96 000 litres), 0.8 litres of chloroform will produce 240 litres of (heavier than air) gas. The considered route of entry into the presumably sealed Button villa was via the external air conditioning fan unit. Both Chloroform and trilene are sweet smelling, and with a slow induction of anaesthesia from a soaked ‘wick’ into a sleeping household, any smell may go unnoticed. Criminals with an anaesthetic bent (or vica versa), may well practice use of these agents in villas of different sizes, in order to refine delivery times and safe administration.