There are two types of repression, however. The notion that primarily repressed memories--say, those of being breastfed, of being potty trained--could ever resurface is bogus of course. But it is that original violence, first of being cared for, and then having that care taken away and even, in many cases, transforming into authoritarian violence in order to be socialized properly, that precipitates all other "secondary" repressions like Freudian slips, even screen memories or rationalizations. No, most people traumatized past the age of say, 5, won't readily forget it. But perhaps they will have a way of reconciling with that trauma in an unhealthy or not fully conscious manner (consider self-harming, or drug abuse, making up a narrative in order to stay with a partner who violently abuses them). And they will not readily connect their traumatic experiences with their unhealthy coping mechanisms. And we could say that the connection between unconscious behaviors and trauma, when revealed, could be considered a "re-surfacing." Even if I can't remember being breastfed, I know that I find the warm embrace of another's arm's comforting and soothing, and this perhaps relates to my original state of relaxation as a child in my mother's arms, for instance.
Why would it relate to your past experience of being held in your mothers arms, rather than to whatever inbuilt tendencies that lead one to respond well to being held in one’s mother’s arms while a baby?
Like, if kissing is derived from impulses relating to breastfeeding (which is a hypothesis that, AIUI, is in good standing, though not the only one in good standing nor necessarily more favored than a couple others), I wouldn’t think that therefore someone who was only ever bottle-fed as a baby would therefore not get anything out of kissing. The appeal of “my lips on another person” should be there regardless, just as it was for the first time a baby is breastfed (though, of course, it is also a cultural thing: not all cultures have had kissing as a standardized way of expressing affection, so whether one grows up in a context where kissing plays a role, that probably also plays a part in whether one finds it appealing to have one’s lips on another person).