Smell antifreeze?

Question: We have a 2001 Chevy Venture. Tonight after I got home, I could slightly smell antifreeze. However, there is NO leak anywhere! (That I can see). The temp gauge is fine...ran in the "low" range all day. Any ideas what it could be? Answer: 99% certain the problem is an intake manifold gasket leak. FYI: GM has lost a lawsuit against them for this and are paying up to $800.00 to get it fixed. see link below for full article. GM Dex-Cool Lawsuit Settlement How to Replace Lower Intake Manifold Gasket