It may be interesting to note that the most likely place an ordinary citizen would encounter arsine is when large banks of lead acid accumulator batteries are charging I used to be around large submarine batteries on charge and the smell is quite unique I believe it was a result of the charging process I believe this is correct  though it may have been stibine producing the odour Most likely is that both arsine and stibine contribute to the characteristic smell It is unnoticable when charging small everyday accumulators