Airborne particulate matter can be a complex mixture of organic and inorganic substances which might be divided into two groups: coarse and fine particles. The fine particles include formed aerosols (gas that looked to particles), combustion particles, and metal vapors. The large particles are items like dust in the road or a factory. The fine particles are the ones most directly associated with acid rain and people are the ones we are likely to deal with today. They have one of the most relevance on the new laws in California regulating the emissions from semi-tractor trailers. While Santa Cruz is not a big city, you will find there's major artery, highway 1 which runs through our lovely ocean side communities in addition to mining in high altitude which generate particulates too. If in a very room or building, Claustrophobia sufferers may constantly be checking for doorways and exits or standing near exits even during large rooms, and feeling fear when doors are closed. Smalls spaces like cars, planes and lifts ca also bring anxious feelings. In some cases being in these situations can bring on panic disorder, in extreme cases just going to a closed door may cause a Panic Attack. 4. The number of arguments which they make Mausoleum smells are from the decomposition process, which occurs naturally as the body undergoes the decaying process. Morticians frequently call the offending bodies, "leakers". These mausoleum odors may be terribly overwhelming, and thus of the embalming chemicals as well as the gases coming because of decomposition, they're able to in conjunction with that pose a health hazard to workers and visitors.