Thank you so much, guys! It exactly looks like B. cupreum i see on the web. I think mystery is solved! I have an other plant that is market B.cupreum that i bought as a seedling. It has now 6 pbs but whole plant including pbs is way smaller than the blooming plant. Do Bulbophyllums increase in size as plants mature?
I am not sure about fragrance. I am having a cold for a second week now and cant smell much. Hopefully i will get over it soon.