Car started accselerating different and had no power

So when I would shift into gears as it would start to climb up and speed the RPMs would run high for a while like it wasn't catching or something and then after driving in the gear for a while and if I didn't push down on the gas pedal too much the rpms would finally level out to narmal so i thought it was a fule problem i took care of all thatso i thought i fixed the issue but the car shifts in to gear and starts fine but as soon as i let off the clutch and and try to accelerate it would start doing the same thing the RPMs would rise the car felt like I had hesitation or something all the way through the gears until I get to 5th and it would ride somewhat decent at 60 miles an hour and then coming home one day i smelled some weird fluid or some kind of not good smell. But did not no if it was my car or not untill i got of the freeway and went to shift and there was no clutch it seemed as if it disapeared luckly i got alittel acceleration and costed to were i left i pulled the pedel up and i leftit for 2 days and when i came back i started the car and was able to shift into gearit drove but it felt as if it had no power and accelerated all funky again but i got it the two blocks home and now I'm trying to find out what the issue could be please help