Word: odorless
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...most lethal rat-killer known is odorless, tasteless "1080" (TIME, Sept. 17), recently developed by the U.S. Fish & Wildlife Service. The same basic poison was simultaneously isolated as the toxic element in a deadly South African plant called "Gifblaar." But 1080, like atomic energy, is almost too hot to handle. It is ideal for murderers. A human victim, without smelling or tasting a thing, could probably be done in by 1/50...
This spectacular show was staged last week to demonstrate one of the most promising methods yet found for applying the wonder insecticide, DDT. The Todd Shipyards had rigged up an insect-killing version of its Army & Navy smoke-screen generator. The contraption sprays a dry, odorless, stainless cloud of fine oil particles containing a 5% solution of DDT. The fog disappears in a few minutes, leaving a deposit of DDT crystals on everything it touches...
Chemist Midgley buckled down, with a corps of able assistants, in Frigidaire's Dayton, Ohio laboratory. Compound after compound was examined, tested, cast aside. Finally Chemist Midgley hit on dichlorodifluoromethane (carbon; chlorine; water; and the mineral, fluorspar). It was nonpoisonous, odorless, would not support flame. For the second spectacular time, Midgley had rung the laboratory bell...
...were found to kill airborne micro-organisms quickly, even in concentrations as low as one gram of chemical per 500 cu. ft. of air. Trouble was that all these air germicides smelled bad, or were toxic, or irritated the respiratory tract. Dr. Robertson's propylene glycol vapor is odorless, tasteless, nontoxic, non-irritating, cheap, highly bactericidal...
Last spring, young Dr. Lefft tried to find a natural body substance that would be harmless to the brain, make clear X-rays possible. After several tries, he hit on Di-odotryosine, a white odorless powder of an iodine compound normally found in the thyroid. Dr. Lefft mixed the powder with ordinary gelatine, tried it first on cats and dogs. Later he and Dr. MacLean used it on 44 patients with excellent results. The new substance, said Dr. Lefft, can also be used for X-rays of lungs, uterus, other abdominal organs...