I forgot an item at the Orly 4 business lounge

You must declare any item which is forgotten or lost at the airport before or after the security or police filters. 
You must contact the lost and found service in the terminal as soon as possible when a telephone number is available, otherwise you need to go there as soon as you return from your trip.
At Orly, it is located on the "Arrivals" level of the Paris-Orly 1 and 2 terminals, opposite the A100 elevators serving the car park.
It is open from 7 a.m. to 4 p.m. every day from Monday to Sunday, and processes all objects found on the Paris-Orly platform 1, 2, 3 and 4.

More information by visiting the Paris Airport website:
https://www.parisaeroport.fr/passagers/services/pour-vous-aider/objets-trouves

https://moncompte.corsair.fr/Claims