I really don't think it can increase the risk since, IMHO, it is already at 100%. If a game starts with 1 infected player, all will be infected by the time the game ends. If it starts with 0 infected players then none will be infected regardless of hitting.
You can't get a little bit pregnant. And you can't get pregnant without screwing (medical interventions excepted).
I could be mistaken of course, but I don't see it making even a tiny difference. On any 1 shift, yeah OK, a small difference. In a complete game, none.
yeah, you're oversimplifying the virus. not that i want to get into a huge COVID chat, but i'll just touch on a few things.
1. depends what stage of your infection you are
2. depends on HOW infected you are i.e. your viral load. not everyone's a superspreader.
3. depends on proximity to the person infected
4. depends on air circulation in arena/locker room
If a player is VERY infectious and he plays, then he's theoretically going to give it to the people within closest proximity to him on the bench. the next highest risk would be the people near to him in the locker room. then the next highest risk would be the people on the ice with him at the same time that are D'ing him up or that he's playing D on, the proximity to him and the length of time and frequency near him.
Then you have a wild card like a trainer who may have a relatively brief but close interaction with the player, or perhaps the player rinses his mouth and spits near a trainer and aerosolized virus is spread.
bottom line is that it isn't cut and dry as to who will get the virus. you can assume that an asymptomatic player could give the virus to a few teammates and may possibly give it to 1-2 opposing players. the NFL's a good example of the lack of team to team spread when someone is asymptomatic.
you also factor in teams getting swabbed every few days and them possibly quarantining, so you're reducing the risk a bit.