2006 honda odyssey burning and smoke front of the engine after start an engine.

What is your question?

I have 2006 honda odyssey LX and I've just replaced serpentine belt and power steering pump today. I had a power steering oil leaked from the pump and also 120K miles, so I replaced serpentine belt. After finished, when I start an engine, everything is ok, accept something is burning and smoke came from front of the engine. It look like under the engine bay and it is middle of the front side engine between middle spark plug area and radiator. I've never touched or worked this area and only worked on belt and power steering pump. I've never had this problem until today and it is mind boggling. Please respond. Thank you.

What makes this problem better or worse?

Never had a this kind of problem till today.

How long has your 2006 Honda Odyssey had this problem?

Right after change serpentine belt and power steering pump.