I've never given my wife a French Kiss and she still married me with out any tongue sugar. 
A french kiss is a great way to arouse her however by stimulating her lips mouth and tongue
But what about bad breath? Bad breath is a big turn off!
Yes halitosis is a real problem when kissing, but sometimes breath mints or brushing your teeth can help with the odor
It's my my breath it's hers. Should I just wait until she come at me with a kissy face and throw a tic tack in her mouth?
Tic tacs can help but i would recommend you encourage her to practice good oral hygiene instead
I've been trying but telling my wife she has bad hygiene is a good way to get my self in trouble. But people have been French Kissing for ever I want to try it. 
Just get in the habit of always eating tic tacs yourself regularly and offering her some!  The little boxes are easy to carry
Thanks, I'll try that.
Tic Tac
Tic Tac (stylized as "tic tac") is a brand of small, hard mints manufactured by the Italian company Ferrero. They were first produced in 1968 and are now available in a variety of flavours in over 100 countries.
Tic Tac are usually sold in small transparent plastic boxes with a flip-action living hinge lid. Originally, Tic Tac were dyed specific colours for different flavours, although in many countries the transparent plastic boxes are now coloured and the actual Tic Tacs are white.
free gum increases the remineralization / protection of eroded enamel surface significantly.
Gum chewing is regarded as a helpful way to cure halitosis (bad breath). Chewing gum not only helps to add freshness to breath but can aid in removing food particles and bacteria associated with bad breath from teeth. It does this by stimulating saliva, which essentially washes out the mouth. Chewing sugar-free gum for 20 minutes after a meal helps prevent tooth decay, according to the American Dental Association, because the act of chewing the sugar