And to add a bit more, it's like trying to avoid teaching your kid about Santa. Eventually they are going to hear about him through the grapevine, and then probably be upset you made it all about you rather than just letting them be a kid. Yay fun, to be the only non religious, non santa or xmas celebrator during the holidays. What kid WOULDN'T want those parents!!! LOL
I tend to find that things parents completely avoid or try to tell their kids are wrong/bad are the exact thing those kids seek out to learn more about eventually. That generally leads to some anger/resentment and a feeling of distrust from their parents. No one wants to think they've been 'programmed' even by their own parents. It undermines the trust you should have with your children.
So you could try as hard to avoid that topic with your child, still no way to ensure they won't find Jesus later on in life, then blame you for sheltering them from it. Just remember, they are not robots, or you reincarnate, and they will decide EVERYTHING for themselves at some point, good or bad
Indoctrination of any kind is impossible to avoid. Indoctrination isn't aways a bad thing however. No matter what, we were all indoctrinated in some form or fashion. The important thing to remember is we are all humans. You are not programming a robot, or else none of us would ever have been given the ability to think freely. Even people indoctrinated into Christianity have later in life decided they no longer believe or agree.