A kind of container-closure system includes container, for accommodating treatment fluid and there is tip to be configured to distribute one treatment liquid. It includes dispensing head at least part of container that a kind of ventilation cap, which is adapted to cooperate, and there are one or more ventholes air to be allowed to pass in and out between chambers for those, the ventilation cap and above-mentioned distribution end part. At least part of second lid is configured to be able to cooperate two containers and ventilation capacity in the tamper evident seal of ventilation capacity and the second lid
