Recruit sniffers

There are many kinds of malodorous smells caused by malodorous pollution, sewage discharge, garbage, etc. In real life environment, especially when a variety of smells are mixed together, it is difficult to complete the detection only by instruments and equipment, and it is necessary to use people's sense of smell to analyze and judge its impact on the environment and pollution degree. Therefore, the occupation of analyzing and judging odor is called "sniffer". In foreign countries, this profession is more vividly called "smelly teacher".

? Sniffers are not a new profession. In China, the relevant government departments have formulated 1994 emission standard for odorous pollutants. After that, the country began to conduct formal training and examination for sniffers, and issued professional certificates, which made the profession of sniffers more standardized and professional. Most of them work in environmental protection departments at all levels.

Sniffers use their noses to identify various malodorous smells, even abnormal smells. , delimit the odor level and confirm whether it meets the emission standard of odor pollutants. The decision made by the sniffer has legal effect. If it is judged that the smell exceeds the standard, the relevant departments can order it to be dealt with according to law, and the judgment of sniffer will provide technical support for environmental management decision-making. Landfill, sewage treatment plant, sewer, etc. All belong to the identification work of sniffers.

Being a sniffer is not that the more sensitive the nose, the better. On the contrary, the sniffer is the sense of smell of ordinary people, and it is not as sensitive as others think. They should represent the sense of smell of ordinary people. If the sense of smell is super sensitive, it can't reflect the concentration of smell truly and objectively, which will affect the judgment result.

To become a sniffer, you need to go through strict training and examination. First of all, candidates need to learn theory and master basic knowledge such as determination methods of malodorous gases and national standards. After passing the written test, a series of on-site olfactory tests are needed. After passing the professional certification, you can engage in related work. However, the professional qualification of sniffer is not lifelong. Due to human physiological reasons, the sense of smell will decline with age. Therefore, the sniffer should be re-certified every three years, and the sniffer should not be over 45 years old.

Sniffing detection follows the "six plus one" mode, that is, each sample is identified and judged by a sniffing group, and a sniffing group consists of six sniffers and 1 judge.

Detection process: the judge first dilutes the collected odor to a specific concentration. Then six sniffers smell and identify with their noses respectively. Smell the smells with different concentrations in batches, and the smell becomes weaker and weaker until six sniffers can't smell the smell, and the whole sniffing process is over. Finally, the judge gives the judgment result according to a set of scientific statistical methods.

In order to ensure the normal sense of smell at work, sniffers are forbidden to smoke, drink, make up and wear perfume in their daily lives, and of course they can't catch a cold or rhinitis at work.

Every day, teachers in the United States walk through the crowds to smell the smell of people, which provides detailed information for the research and experiment of human body odor.

In Japan, a stinking teacher mainly smells the smell of public toilets. If the smell exceeds the standard, you can instruct the toilet administrator to remove the smell in time. It is understood that the "smell sniffers" recruited by the Tokyo environmental protection authorities can immediately respond to the environmental protection authorities when they find odors in subways, stations, public toilets, etc. In order to instruct specialized personnel to deodorize within a time limit. The monthly salary of Japanese smelly teachers can be as high as more than 500 thousand yen, about 38 thousand yuan.

The smell sniffers in the Netherlands mainly work in huts on the edge of industrial areas and inhabited communities. They stick their heads out of the window to smell the smell in the air and detect the local air pollution.