Hi all, this is my first post in this forum and I am quite new in photography.

I bought my camera around a year ago and didn't put any filters on my two lenses due to lack of knowledge. Since then I have managed to put some dust and 'light' smudge on the lenses but I don't actually notice that it affect the picture quality.

Now that I have bought filters on both of them, should I clean my lenses? The reason I ask is because I am afraid that cleaning up lens will do some damage to it. And the fact that I don't notice any impact on the picture, I am not sure if I should clean it. Wondering if dust and smudge will eventually getting harder to clean if I leave it there for a long time.

Please advise. Thank you.