No person, firm or corporation shall engage in the business of drying grain that has been damaged by wet or moisture or damaged grain that is in process of fermentation without first obtaining a license from the Director of Licenses and Permits of the city to engage in such business and paying for such license the sum as provided in Chapter
175, Fees. No such license shall be granted except upon the written recommendation of the Department of Health; and all licenses granted pursuant to this chapter shall expire on the first day of May next after the granting of the same.
No person, firm or corporation carrying on such business, as
aforesaid, shall allow the fumes, vapor or any offensive odors given
off in the process of drying such grain to escape into the open air
in such manner as to cause or tend to cause injury, discomfort or
annoyance to any person or persons or to the public.
Nothing herein contained shall apply to the business of malting
grain to be used in the manufacture of ale or beer.