Concentrations above 5ppm in air can cause serious problems. You might want to look at this paper, if only to see that, commercially, HCl solutions have another name which can be misleading, Muriatic Acid. What happens if muriatic acid fumes are inhaled?
Answer: A palapa is a thatched-roof, open-sided structure (see palapa photo). The material to cover the roof of a palapa typically consists of dried and woven palm-tree leaves. A palapa is sometimes referred to as a grass or tiki hut.
Chalupa (boat) For other uses, see Chalupa (disambiguation). A Chalupa (in Basque: Txalupa) is a small boat that functions as a shallop, water taxi or gondola, such as those seen at the floating gardens of Xochimilco south of Mexico City, Mexico. Chalupa is also the name of the type of whaling boat used by the Basques in the mid-16th century in what is now Newfoundland and Labrador.