No actually femmed seeds are even more prone to hermies then reg seeds. Either type will hermie if contaminated by light stress during the dark hours but fems even more so... be sure there's no light leaks or tiny lights from power strips,etc. on during the 12 hrs of darkness must be totally uninterrupted. Usually hermies occur from undue stress but plants can also herm from unstable genetics...selfed seeds do not happen often but they do happen & more so with fems than regs.