Spices storage conditions I have seen in a lot of places that spices and dried herbs need to be kept in an airtight container.

I have several container that are virtually airtight, but they have couple small holes that if filled with liquid and put upside down it would drip slowly.

Is there any harm in storing spices in this condition? 
Is it safe to store spices like that?

Can this very small amount of air be detrimental?
The flavor and aroma of spices deteriorates over time, particularly when exposed to air and light.  How much time? ...hard to say...but buying whole spices and grinding them yourself when needed lengthens shelf life...as does storing them in airtight containers and in a dark, cool place.  Health and safety is not a concern here.  Flavor and aroma is. We are talking shelf life in terms of months, not years.  So, your containers (clearly not airtight) will be fine, but the quicker you cycle through your spice inventory, the better.