A B757-200 Flight Attendant reported noxious fumes developed in the aircraft's aft cabin after takeoff; making one of the flight attendants ill. An emergency was declared and the aircraft was returned to the departure airport where a flight attendant was removed by paramedics. A lavatory cleaning solution was thought to be the fume's source.

Narrative

Just after take off #2 Flight Attendant and myself noticed odor much like a pesticide. The fumes immediately affected the #2 Flight Attendant. We reported to the #1 Flight Attendant this information. He walked to aft of the aircraft and noticed nothing until he stepped into the galley. He became overwhelmed by fumes as well. The cockpit was notified. They recycled air and asked to report back in 5 minutes. The fumes seemed to dissipate and we reported this to cockpit. Less then a minute later it was filling the galley again. I had what seemed like a sinus infection headache as well as the #1 Flight Attendant. The #2 Flight Attendant turned white and began sweating. We informed cockpit and they decided to return to the departure airport. Passengers were informed. The #2 Flight Attendant and I stayed in the First Class galley until wheels down. We shared one O2 walk-around on landing as there were no available seats on aircraft to stay away from fumes. Upon arrival the paramedics removed #2 Flight Attendant. I stayed in back with passengers. The Chief Mechanic came to back as well as ground personnel to check. Mechanic stated he felt dizzy and other personnel smelled it as well. We were removed from flight and met by flight service personnel. Were told to go home and see a doctor if we felt the need.