Among those campaigning to keep kratom legal are scientists such as Andrew Kruegel, an associate research scientist at Columbia University.
Even these symptoms donât necessarily mean the cough is serious. Iâm seeing plenty of people this year with fevers and coughs lasting two and even three weeks or more who still turn out to have simple viral infections. But these are symptoms that are worth a call or even a trip to your doctorâs office.
Sulfur dioxide has an irritating odor and is a poisonous gas. Care must be taken when handling SO2(g). Exposure to concentrations as low as 8 ppm will produce coughing. If you start coughing due to SO2 inhalation, leave the laboratory to seek fresh air. Deadly concentrations for rats start at 1000 ppm.