I have a feeling its the same as pouring a few bottles of poison in a swimming pool. We just have so much atmosphere.. sure, there will be a minimal but significant drop in temperature and some plants may not grow as abundantly as normal, but globally, the consequences are not (as) cataclysmic.
Edit: apparently people do not know how vast the amount of water that goes in a typical swimming pool is..
And any analytical mind can take some educated guesses and say 'well, if I pour 6L of a poison in an average public swimming pool of 30x2x10m, that's 1 part poison per 100.000 parts water, or 0,00001% poison. Same goes for the atmosphere and blasted up particles. Aside from that, most people would read'I feel like' ~= 'I guesstimate', but it seems these days some of us need explicitness past the normal verbal conventions.
Edit: apparently people do not know how vast the amount of water that goes in a typical swimming pool is..