There are hundreds of compounds potent enough and tasteless enough to be dissolved in water without the drinker realizing. Old-fashioned LSD would work too.
I've had 2 different coworkers who were fairly awake already completely interested in Q, only to tell me the next day that they got drunk or bumped into an old friend with coke instead and that they barely made it into work let alone had time to read what they seemed so intrigued by the night before. THEY want you DISTRACTED. The seed was planted at least.