Baby scared of men

Kailey Suzanne • Hazel Suzanne 02.18.18 - Colbie Margaret 08.09.19 - Baby girl #3 due 05.28.21

My 3 month old really hates the sound of men’s voices! She loves my husband and my father, but they don’t speak very deeply.... she’s completely frightened by other men with low voices. I feel so bad that my father in law can’t even love on his granddaughter without her screaming the whole time!!! Anyone have tips? Something she just has to grow out of?