To expand on FP's erratic comment I'll explain what not to do.
I generally figure I have to throw them a curve ball of some sort. This is me adjusting to them knowing. Problem is that my action generally comes in the form of an unexpected bet. Usually a semi-bluff as I still can't purely cold bluff.
But then they know I do this on occasion! And I get caught with my hand in the cookie jar.
SO,,, from their POV, they know that I know, but they may know more about what I know than I do.
And since poker players tend to not share these types of
tells, I can never be sure just what it is that they know about me, and the one time I shared what I thought I knew about another player, the info pretty much dried up and became useless shortly thereafter.
As an aside sort of, this question is probably more ring specific than tourney specific. As a tourney guy, I like that any reads I get or others get on me will be transitory in nature, and boil down to a single big question;
Did player x bring his 'A' game today?
Of course that big question is full of a lot of conditions, but for the most part if the answer to that is no, then I don't have to worry too much about what I think I know about whether or not that player knows anything about me.
huh?????