Lots of different things going on here with many potential causes, I'll take a stab!
Now it is warm enough to start using my ac I get this loud weird noise from the front. It sounds almost like something is stuck on the fan however, my ac blows cold air.
But the noise is starting much faster than a month ago and now my car makes that sound while it is in idle even when I am not using the ac! Plus now I smell something weird when the ac is on. I don't run the ac anymore and not much I can do when it makes that sound while car is idling. However, within a minute or two after I start driving the loud noise stops.
Does this noise only show up when you first start the car? If so, that's normal. That's the secondary air injection pump priming the catalytic converter. That pump only comes on when it's warm enough outside and the computer deems it necessary for a first start.
Otherwise, the A/C does kick on the front radiator fan as well.
As for the smell, you may need to replace your cabin air filter.
This maybe un related: Today it was so hot in my car but it was only in the 70s. So I reach over to see if the heat was coming from the vents but no the heat was coming from my stereo!!! I shut the stereo off but it was still real hot for miles later!!!
The radio in a smart seems to be a hot little bugger. Even after you turn it off the heat will remain for a very long time as well.
Also, make sure the temperature lever on the is on the lowest setting. If it's on a hot temperature, it'll blow hot air even if the fan setting is set to 0.
Where my lighter would be is a battery type charger I have had a cell phone charger in it and it never charges my phone.
Well, this one needs more context. When you plug in the phone, does the charging icon show up? If it does, there's likely nothing wrong with the car but with the charger plugged into the car. Those chargers sometimes do not output enough power to charge a modern phone properly. A modern phone will need 1.5a to charge at anything resembling a good rate, while some of those things don't even output 1.0a.
If the charging icon doesn't show up, then check to make sure the fuse in the charger is good, I think there may be a fuse for the connection itself too.