Lewis & Short

infector, ōris, m. [inficio], a dyer (class.): eum infector moratur, Cic. Fam. 2, 16, 7: lanarum, Plin. 20, 7, 25, § 59.
Adj., dyeing: infector ille sucus, Plin. 11, 3, 2, § 8.