(b) The resolution or ordinance of the towns and villages authorizing the local boards of health of said towns or villages to appoint a health officer for the said towns or villages pursuant to subdivision three of section three hundred twenty of this chapter, shall state the proportion of compensation and expenses of the health officer for which each such town or village shall be responsible. 5. The provisions of this section relating to the care of venereal diseases shall not apply to municipalities where a satisfactory clinic is reasonably available.