If we only counts toxicity from Fluoroacetate- and Fluoride ion metabolite, and not the toxicity of the parent molecule itself,
Fluoroaromatic wont detach so easily unless that aromatic has at least one another electron withdrawing group on it. (eg. 1-Fluro-4-nitrobenzene)
Plain fluoroaromatic itself (fluorobenzene) or ones with electron donating groups (eg, 1-fluro-2-ethylbenzene) wont ever 'leave' the structure.
Fluoroaliphatics are another story, they are likely to get broken down till fluoroacetate, or leave as fluoride ion; of which the fluoride toxicity stems from
Fluoroaromatic wont detach so easily unless that aromatic has at least one another electron withdrawing group on it. (eg. 1-Fluro-4-nitrobenzene)
Plain fluoroaromatic itself (fluorobenzene) or ones with electron donating groups (eg, 1-fluro-2-ethylbenzene) wont ever 'leave' the structure.
Fluoroaliphatics are another story, they are likely to get broken down till fluoroacetate, or leave as fluoride ion; of which the fluoride toxicity stems from