Gorilla glue 4 and jack flash 5

Its 3 weeks since i went 12/12. I have 2 GG#4 and two JF#5 when i stuck my head in at lights on today it smelt.. well like tangy ass has anyone got experience growing these strains? What were your smells like a few weeks in? I dont think its down to poor airflow or humidty as i run an exhaust through a cool tube have a 4 inch intake coming in from the bottom, 2 clip on fans And an oscillating On the floor helping the intake circulate! Any light to be shed on these strains hit me up because im stumped
 
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