Specific food standards differ from country to country. Each country has its own organisation which oversees standards among businesses:
The UK has the The Food Standards Agency (FSA). The FSA works with local authorities to enforce food safety regulations and check that standards are being met.
Industry bodies and regulators around the world try to emphasize the importance of clean air in the workplace. The problem is that many people still believe that outdoor air pollution can be escaped simply by going indoors. However, indoor air quality can be just as bad, and even a lot worse, than it is outside.