1st Time Grower - Plant#1 Mystery Strain

Hey Friends, end of week 9 from seed Plant #1 is growing big, not too much flower yet I started noticing a weird smell coming out from the plant. The nutrients I use do not have a pleasant smell but this smell coming out from the plant smells very weird. When i touch the leaf with my finger it leaves a strong smell like Lemon and green mango which is good, but when I put my nose close to the cola it smells weird like wet socks. I searched for mold and didn't see any signs. The plant looks healthy, humidity is at 51% Temperature 76 f This week I also noticed some of the leaf stems close to the light were turning red, only the top ones were turning red so I lowered light intensity and the stems are slowly turning back to green. Looking forward in seeing some flower development in week 10, will keep you guys posted, see you next week 😊